Holgate Center

How does Holgate Center compare with other mixed use property buildings in Seattle?

The latest disclosures cover 157 mixed use property buildings in Seattle, out of 3,871 buildings citywide. Holgate Center's ENERGY STAR score of 60 compares with an average of 74 across the 29 that report a score; it scores higher than 21% of them and lower than 76%. Its site EUI of 76.0 kBtu/ft² is about 11% above the average of 68.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 0.7 kgCO₂e/ft² is about half of the group average of 1.4 kgCO₂e/ft².

At 112,896 sq ft, it is about 32% below the average floor area of 165,352 sq ft for those buildings. It was built in 1951, 17 years earlier than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².

How has Holgate Center's energy performance changed over time?

BuildingCensus holds 11 Seattle disclosures for Holgate Center, covering report years 2015–2025. Its ENERGY STAR score went from 71 in 2015 to 60 in 2025 (-11 points); its best year on file was 2015, at 71. Site EUI moved from 82.4 kBtu/ft² (2015) to 76.0 kBtu/ft² (2025), a 8% decrease. Reported emissions went from 98 tCO₂e to 73 tCO₂e over the same span (down 25%).

What does an ENERGY STAR score of 60 mean?

ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 60 means the building performs better than about 60% of its national peers. BuildingCensus bands the score into report-card grades; 60 falls in band C — below median (55–69). It sits 15 points below 75, the threshold for ENERGY STAR certification. In Seattle, 69% of scored buildings are at 75 or above.

Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. Holgate Center's 76.0 kBtu/ft² across 112,896 sq ft works out to about 8.6 billion Btu (2,515 MWh-equivalent) in 2025. Its source EUI of 204.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,365,250 kWh of electricity and 5,058 therms of natural gas for the year.

Which law requires Holgate Center to report its energy use?

Holgate Center reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:718:2025). Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.